package com.kinth.common;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;

import com.alibaba.fastjson.JSONObject;

public class HttpRequest {
    /**
     * 向指定URL发送GET方法的请求
     * 
     * @param url
     *            发送请求的URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    public static String httpPost(String url,JSONObject arg){
        InputStream is;
        BufferedReader br;
        StringBuilder sBuilder = null;
        try {
            HttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);
            //方式一：将参数添加到请求体当中
            
            httpPost.setEntity(new StringEntity(arg.toString(), "UTF-8")); 
            
//            httpPost.setEntity(new StringEntity(arg,"utf-8"));//默认是采用ISO-8859-1 对于中文需要使用utf-8编码
            HttpResponse httpResponse = httpClient.execute(httpPost);
            //连接成功
            System.out.println("post : start");
            if(200 == httpResponse.getStatusLine().getStatusCode()) {
                System.out.println("post : ok");
                HttpEntity httpEntity = httpResponse.getEntity();
                is = httpEntity.getContent();
                br = new BufferedReader(new InputStreamReader(is));
                String tempStr;
                sBuilder = new StringBuilder();
                while ((tempStr = br.readLine()) != null) {
                    sBuilder.append(tempStr);
                }
                br.close();
                is.close();
            }
        }catch(Exception e){
            e.printStackTrace();
        }
        return sBuilder==null? "":sBuilder.toString();
    }  
}